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Chemical Engineering - Polymer Technology

Exercise : Polymer Technology - Section 3
41.
Synthetic rubber
deforms, if stretched to double of its original dimension.
is brittle at low temperature
is softer at higher temperature.
is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the
electrical insulation purpose.
tanning of leather.
strengthening of plaster of paris.
decorative laminates.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer ?
PTFE
Buna-S
PMMA
Polycaprolactum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Cation exchange resins used in water treatment is made from __________ resin.
urea formaldehyde
epoxy
amino
phenolic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Size range of polymer molecules varies from __________ metre.
10-2 to 10-5
10-4 to 10-7
10-1 to 10-2
10-8 to 10-10
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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